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Neck-turned

ndbillyndbilly Member Posts: 1,573 ✭✭✭✭✭
edited July 2002 in Ask the Experts
RE: The phrase "neck-turned" in relation to rifle brass. What exactly does it mean?

Thanks.
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Comments

  • JustCJustC Member Posts: 16,056 ✭✭✭
    edited November -1
    It means that the neck area of the original rifle it was loaded for, was cut tighter than SAAMI specs. this is done for match guns like benchrest rifles, it keeps the gass pressures very uniform when exiting the case mouth and allows no blowback. It does add greatly to accuracy, but only if the gun is cut for it, not in a standard rifle chamber.

    If you look at a standard rifle cartridge measurement in a reloading manual, you would see, just as a reference, a neck measurement of .355". Now, a match benchrest rifle chamber might be cut at the neck area of the chamber to only .338". therefore, any factory ammo, would not feed into the chamber, as the neck area would not feed into that tight of a space. The only way to load rounds for these type of custom setups, is to actually "turn" the neck of each case down to .338" and then load them. Just think of a machinists lathe, that is what turning the neck of brass is, reducing the diameter for a specificaly cut chamber.

    A great rifle with a junk scope,....is junk.

    Edited by - JustC on 07/27/2002 15:17:56
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  • coyote-mancoyote-man Member Posts: 78 ✭
    edited November -1
    Neck turning-removal of brass from around the neck. Reason; to alow enough clearance for when the casing is fired in a "tight neck" chamber.
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  • leeblackmanleeblackman Member Posts: 5,303 ✭✭
    edited November -1
    Some bench shooters will have a barrel chambered for small neck. And the neck has to be trimmed so it will fit the chamber.

    If I'm wrong please correct me, I won't be offended.

    The sound of a 12 gauge pump clears a house fatser than Rosie O eats a Big Mac !
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  • jonkjonk Member Posts: 10,121
    edited November -1
    Also useful in cartridge conversions. For instance, 7.65X54 Argentine Mauser is formed from 30-06. You are removing 9mm of brass from the case to make this conversion. You don't really NEED to turn the neck in this case, but because the brass is so much thicker farther down the case body, in some guns loaded ammo might not chamber without thinning the neck. I was just saying recently I need a neck turner for this very reason.

    "...hit your enemy in the belly, and kick him when he is down, and boil his prisoners in oil- if you take any- and torture his women and children. Then people will keep clear of you..." -Admiral of the Fleet Lord Fisher, speaking at the Hague Peace Conf
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  • ndbillyndbilly Member Posts: 1,573 ✭✭✭✭✭
    edited November -1
    Thanks all. Appreciate the info.
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